After the renewal of the “Teacher in Space” program, Barbara was selected to be a member of the crew of space shuttle mission STS-118, the flight of which (to the International Space Station) was planned for November of 2003. The accident that happened to the Columbia space shuttle (on its return flight on February 1, 2003) delayed her flight.
From August 8 - 21, 2007, she made a spaceflight as a flight specialist on the Endeavour STS-118 space shuttle mission.